Every sentence that a young child hears is an opportunity to enhance his lexicon and the Guardpix Language Habits device ensures that the process of learning is well supervised. Donguk Seo's invention is one that helps kids to understand the difference between positive and negative terms.

The little cat-like gadget has a large plastic head with a pattern of LED lights embedded within it. These illuminate to signify one of two facial expressions, either a smiley face or one with a frown. The physiognomic changes in the clever character are reactions to the sounds of different words.